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Using the Property Manager to build simple forms...
by Russell Fine 19 Mar '04

19 Mar '04

I'm a newbie to developing products in Zope, and am struggling with how to easily build classes with multiple property sheets that don't allow the user to add and remove fields. I've looked at ZClasses, but everyone says not to use them. I've looked at inheriting from PropertyManager but the standard interface allows the user to modify the fields. Here's what I need : 1. The ability to define properties for an object. 2. The ability to set up one or more ZMI forms to change the values in these properties. The purpse of multiple forms is that there may be many properties, and I want to group them into bite-size chunks. Also, different people will be editing different groups. 3. The ability to derive an object from a base class that itself has pre-defined properties and it's own editing pages. 4. I don't want to hand code property editing pages every time I add a simple property (like a text or date field). Thanks, Russell Fine

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Bug in ZTUtil.Batch
by AP Meyer 19 Mar '04

19 Mar '04

Hi Zopers It seems that there is a bug in ZTUtil.Batch: when the batch should be the length of the batch and there are exactly as many orphans as there would fit on one page the length of the batch becomes size instead of size+orphans. Here are the numbers: no of batches start end orphan length sequence_length 1 1 12 3 12 12 1 1 10 3 10 13 <<< WRONG, end/length should be 13 2 1 10 3 10 14 So, there is a jump on the edge where there should be one batch of the length sequence_length == length+orphans. At that point 3 (in the above case) items disappear. I have looked at the code in Batch.py but not found the solution, yet. Who can find the bug and a solution? thanks Andre -- ------------------------------------------------------------------------------ The disclaimer that applies to e-mail from TNO Physics and Electronics Laboratory can be found on: http://www.tno.nl/disclaimer/email.html ------------------------------------------------------------------------------

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Zope's configure
by John Poltorak 19 Mar '04

19 Mar '04

Is anyone here familiar with how Zope's configure script works? I would like to try and make a change to the makefile and am not sure of the best way of doing that. I guess it would be best to make changes to configure.py. I wonder why the standard GNU build tools like autoconf and automake are not used for Zope... -- John

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ALERT!! Infected mail sent by you!
by postmaster＠hibox.hinet.net 19 Mar '04

19 Mar '04

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packing database crashes zope
by Wouter Vanden Hove 19 Mar '04

19 Mar '04

I packed our zope-database (zope 2.6.2), but after a while this error appears: Site Error An error was encountered while publishing this resource. exceptions.ValueError Sorry, a site error occurred. Traceback (innermost last): * Module ZPublisher.Publish, line 150, in publish_module * Module Products.PlacelessTranslationService.PatchStringIO, line 44, in new_publish * Module ZPublisher.Publish, line 114, in publish * Module Zope.App.startup, line 166, in zpublisher_exception_hook * Module ZODB.Connection, line 551, in setstate * Module ZODB.FileStorage, line 645, in load * Module ZODB.FileStorage, line 620, in _load ValueError: I/O operation on closed file What caused this error? In the var-dir there are (among others) following files: 780M Mar 19 01:35 Data.fs 162M Mar 19 02:25 Data.fs.pack Can I assume that Data.fs.pack is the newly packed database and is not corrupted or incomplete? Or do I need to replace it with a backup? Thanks, wouter www.vrijschrift.org www.opencursus.org

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Easy way to display a random image in ZPT
by Michael Fox 19 Mar '04

19 Mar '04

Hi *, What's the easiest way to do the following DTML in ZPT? <img src="images/<dtml-var expr="_.whrandom.choice(imgages.objectIds())">" /> Regards, Michael

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Zope as Calendar server to Mozilla
by John Poltorak 19 Mar '04

19 Mar '04

Has anyone set up Zope as a remote Calendar server for Mozilla? Is there a HowTo available? -- John

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disable versions for an object ?
by Thomas Bennett 18 Mar '04

18 Mar '04

Is there a way to disable versions for a single object or another solution? My case in point is that I have an AXIS Video WEB cam that the "Boss" wants a new shot sent to the server every 5 seconds. Well I got that part working fine because the camera is running an embedded linux and ftp to a PhotoFolder object on the server so it would be a Photo object. I activated that sometime last week and it worked fine until Sunday I got a call that users could not connect to the server. The Data.fs file had grown to 40 times is usual size and filled up the hard drive. No log entries could be written so I assumed that and other processes that needed to write to the drive stopped services. I had to run Christoph Becker-Freyseng's zodbpack.py on the live Data.fs file(after stopping the server of course), after deleting some large older log files and such, since there was nowhere to copy the Data.fs file. THANK YOU CHRISTOPH !! I assume that Zope was keeping a history version of each photo going to the server which would be 720 photos/hour. So that is why I would want to disable history versions for a single object. In the mean time I am using LocalFS to serve the file from the file system where a second FTP server is running to receive the pictures but I can't show it as a Photo object without running it through the Image2photo script. I'd rather not resort to setting a ZCron or something to pack the live Data.fs every hour, day or whenever. And while on the camera subject, is there a way I can send a login to the camera for live video. The page I have now connects to the camera but a username/password box pops up On IE and Netscape. I have a user defined for view only but I don't want the person viewing to have to login but rather it be automatic. I've tried http://username:password@www.mycamera.site but this doesn't work and I think recent security patches have disabled that format. TIA Thomas -- Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/

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RE: [Zope] Benchmarking Zope
by Jim Kutter 18 Mar '04

18 Mar '04

Checkout BenchmarkTimer on ZopeLabs.com I also use IBM's PageDetailer to get detailed response times for pages. -jim -----Original Message----- From: John Poltorak [mailto:jp@warpix.org] Sent: Thursday, March 18, 2004 2:27 PM To: zope(a)zope.org Subject: [Zope] Benchmarking Zope Are there any ways of benchmarking Zope? -- John _______________________________________________ Zope maillist - Zope(a)zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )

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SiteRoots, AccessRules, and absolute_URLs
by Horak, Karl 18 Mar '04

18 Mar '04

I am running Zope behind a FreeBSD/Apache firewall. Seems like everytime I turn around, Zope is tripping over the address of the Zope server (http://10.0.0.2:8080/ORDweb/...) instead of using the firewall (https://hsrdte.sandia.com/Zope/ORDweb/...) Anything that makes use of absolute_URL seems prone to this problem. I've read dozens and dozens of items on SiteRoot but all it does for me is kill access to the folder, usually for both ordinary use and the ZMI. Even using _SUPPRESS_SITEROOT is very iffy about rescuing the situation. Typically, I just delete my test folders and start over. Recently, I thought that an access rule would allow me to programmatically replace the http://10.0.0.2:8080/ with https://hsrdte.sandia.com/Zope/ when handling requests. For starters, from the Zope book I tried the simple example (at http://www.zope.org/Documentation/Books/ZopeBook/2_6Edition/ZopeServices.stx ). So far it has failed and, as a pleasent side-effect, kills the ZMI. _SUPPRESS_ACCESSRULE at least lets me in so I can turn off the access rule. Still, I haven't a clue as to why it won't work--the example is too simple. Anyway, back to the question at hand: how does one get Zope to stop giving me errors like "Unable to locate object http://10.0.0.2:8080/ORDweb/..."? I just need it to see the external address of "https://hsrdte.sandia.com/Zope/ORDweb/..." instead. Exactly what is the magic that turns http://10.0.0.2:8080 into https://hsrdte.sandia.com/Zope? Specific assistance from anyone with a suggestion would be appreciated. Karl ------------------------------------------------------ Details: (from my network admin--I do not have a clue about the configuration of these proxy-pass issues; I'm just a Python guy) Firewall: apache 2.0.48_3 -- 443 ProxyRequests On ProxyPass /hsrdte/ http://10.0.0.2/ ProxyPassReverse /hsrdte/ http://10.0.0.2/ ProxyPass /Zope/ http://10.0.0.2:8080/ ProxyPassReverse /Zope/ http://10.0.0.2:8080/ em0: inet 132.175.176.8 em1: inet 10.0.0.1 Server: fxp0: inet 10.0.0.2 default Route 10.0.0.1 zope 2.6.2_1 -- 8080 apache 2.0.48_3 -- 80

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